Americans are all for religious freedom -- but disagree on who can claim it.

Diverse religious groups are recognized -- but Christians and Jews are significantly more welcome than atheists, and many don't see a welcome mat for Muslims. And not everyone means the same thing when speaking of a "Christian" nation.

Since his election, Pope Francis has made millions of friends and admirers. But he has acquired some critics, too. Then there are the extremely hostile, outspoken opponents who see him as a heretic or deceiver and speak with shrill and caustic voices. Not surprisingly, many of these come from the extremes of the religious traditions that Pope Francis talks a lot about -- Catholics and Jews.